{"id":764612,"date":"2025-02-03T17:18:50","date_gmt":"2025-02-03T22:18:50","guid":{"rendered":"https:\/\/cacm.acm.org\/?post_type=digital-library&p=764612"},"modified":"2025-02-21T11:40:15","modified_gmt":"2025-02-21T16:40:15","slug":"californias-ai-act-vetoed","status":"publish","type":"digital-library","link":"https:\/\/cacm.acm.org\/opinion\/californias-ai-act-vetoed\/","title":{"rendered":"California\u2019s AI Act Vetoed"},"content":{"rendered":"
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Concerns that artificial intelligence (AI) systems pose serious risks for public safety have caused legislators and other policymakers around the world to propose legislation and other policy initiatives to address those risks. One bold initiative in this vein was the California legislature\u2019s enactment of SB 1047, the Safe and Secure Innovation for Frontier Artificial Intelligence Models Act, in late August 2024.<\/p>\n

Lobbying for and against SB 1047 was so intense that California\u2019s governor Gavin Newsom observed that the bill \u201chad created its own weather system.\u201d In the end, the governor vetoed the bill for reasons I explain here. After a brief review of the main features of SB 1047, this column points out key differences between SB 1047 and the EU\u2019s AI Act, identifies key supporters and opponents of SB 1047, and discusses arguments for and against this bill. It also explains Governor Newsom\u2019s reasons for vetoing that legislation and considers whether national or state governments should decide what AI regulations are necessary to ensure safe development and deployment of AI technologies.<\/p>\n<\/section>\n

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Key Features of SB 1047<\/h2>\n

Under SB 1047, developers of very large frontier models (defined as models trained on computing power greater than 1026<\/sup> integer or floating point operations or costing more than $100 million at the start of training) and those who fine-tune large frontier models (also measured by compute requirements and\/or training costs) would be responsible to ensure that these models will not cause \u201ccritical harms.\u201d<\/p>\n

The bill identifies four categories of critical harms:<\/p>\n